The 2002–03 season is FC Nantes's 60th season in existence and the club's 40th consecutive season in the top flight of French football. In addition to the domestic league, Nantes participated in this season's editions of the Coupe de France and the Coupe de la Ligue. The season covers the period from 1 July 2002 to 30 June 2003.
Note: Flags indicate national team as defined under FIFA eligibility rules; some limited exceptions apply. Players may hold more than one non-FIFA nationality.